QUESTION IMAGE
Question
function a and function b are linear functions.
function a
| x | y |
| -8 | -4 |
| -4 | -3 |
| 8 | 0 |
function b
graph of function b
which statement is true?
the y - intercept of function a is greater than the y - intercept of function b.
the y - intercept of function a is less than the y - intercept of function b.
Step1: Find slope of Function A
Use two points $(-8,-4)$ and $(8,0)$:
$m_A = \frac{0 - (-4)}{8 - (-8)} = \frac{4}{16} = \frac{1}{4}$
Step2: Find y-intercept of Function A
Use point $(8,0)$ in $y = mx + b$:
$0 = \frac{1}{4}(8) + b$
$0 = 2 + b$
$b_A = -2$
Step3: Identify y-intercept of Function B
From the graph, the line crosses the y-axis at $y=-1$, so $b_B = -1$
Step4: Compare the two y-intercepts
$-2 < -1$, so $b_A < b_B$
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The y-intercept of Function A is less than the y-intercept of Function B.