Answer:
y = 4x + 4
Step-by-step explanation:
Two points you can see on the graph are (0,4) and (-2,-4)
Now, to find the slope, use delta y/ delta x
(-4-4)/(-2-0)
(-8)/(-2) = 4
Slope is 4.
y = 4x + b
Now, to find b, we need the y-intercept, which is the point where x is 0 and the graph crosses the y-axis.
This value is 4. So, the y-intercept is 4
Substitute into your equation
y = 4x + 4
Step-by-step explanation:

Answer:
Step-by-step explanation:
x + 40 = 10
x = -30
She paid $30 on her credit card
The y intercepts are 9 and -9 because the y coordinate is zero so they would be plotted ob the y axis and 7 is an x intercept because the x coordinate in the ordered pair is zero.