QUESTION IMAGE
Question
- line 1: (-2,1), (1,-1)
line 2: (1,3), (4,1)
pick the right answer from the possible selections on your screen in eduphoria.
- graph y = -3x - 1. (g2b)
graph the line on eduphoria
- write an equation in slope - intercept form of the line that passes through (-1,3) and is parallel to y = 4x - 2.
pick the right answer from the possible selections on your screen in eduphoria.
- write an equation in slope - intercept form of the line that passes through (0,2) and is perpendicular to y = 1/2x + 1.
pick the right answer from the possible selections on your screen in eduphoria.
6.
Step1: Calculate slope of Line 1
The slope formula is $m=\frac{y_2 - y_1}{x_2 - x_1}$. For Line 1 with points $(-2,1)$ and $(1,-1)$, we have $m_1=\frac{-1 - 1}{1-(-2)}=\frac{-2}{3}=-\frac{2}{3}$.
Step2: Calculate slope of Line 2
For Line 2 with points $(1,3)$ and $(4,1)$, $m_2=\frac{1 - 3}{4 - 1}=\frac{-2}{3}=-\frac{2}{3}$. Since $m_1 = m_2$, the lines are parallel.
7.
Step1: Find y - intercept
For the equation $y=-3x - 1$, the y - intercept $b=-1$, so the line crosses the y - axis at the point $(0,-1)$.
Step2: Use slope to find another point
The slope $m=-3=\frac{\Delta y}{\Delta x}$. Starting from $(0,-1)$, if $\Delta x = 1$, then $\Delta y=-3$. So another point is $(1,-4)$. Plot the points $(0,-1)$ and $(1,-4)$ and draw the line.
8.
Step1: Determine slope
Parallel lines have the same slope. The slope of the line $y = 4x-2$ is $m = 4$.
Step2: Use point - slope form
The point - slope form is $y - y_1=m(x - x_1)$. Using the point $(-1,3)$ and $m = 4$, we have $y-3=4(x + 1)$.
Step3: Convert to slope - intercept form
Expand and simplify: $y-3=4x+4$, so $y=4x + 7$.
9.
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Step1: Determine slope
Perpendicular lines have slopes that are negative reciprocals. The slope of $y=\frac{1}{2}x + 1$ is $m_1=\frac{1}{2}$, so the slope of the perpendicular line $m=-2$.
Step2: Use point - slope form
Using the point $(0,2)$ and $m=-2$ in the point - slope form $y - y_1=m(x - x_1)$, we get $y-2=-2(x - 0)$.
Step3: Convert to slope - intercept form
Simplify the equation: $y-2=-2x$, so $y=-2x + 2$.
Since no answer choices are provided for the "pick the right answer" parts, the equations and graph - related steps are shown for the problems.