QUESTION IMAGE
Question
here is a system of equations.
\
$$\begin{cases}
y = 3x - 6
\\\\
y = x - 4
\\end{cases}$$
graph the system. then write its solution. note that you can also answer
o solution\ or \infinitely many\ solutions.
Step1: Set equations equal
$3x - 6 = x - 4$
Step2: Solve for x
$3x - x = -4 + 6$
$2x = 2$
$x = 1$
Step3: Substitute x to find y
$y = 1 - 4 = -3$
Step4: Verify the solution
For $y=3x-6$: $y=3(1)-6=-3$
For $y=x-4$: $y=1-4=-3$
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The solution is $(1, -3)$
To graph:
- For $y=3x-6$: plot the y-intercept $(0, -6)$, then use slope $3$ (rise 3, run 1) to plot a second point, then draw the line.
- For $y=x-4$: plot the y-intercept $(0, -4)$, then use slope $1$ (rise 1, run 1) to plot a second point, then draw the line. The lines intersect at $(1, -3)$.