9514 1404 393
Answer:
13
Step-by-step explanation:
Compare the following equations:
y = mx + b . . . . . . . . slope-intercept form: b = y-intercept; m = slope
y = -72x +13
It should not be much of a stretch to see that b = 13, the constant in the equation.
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The y-intercept is the value of y when x=0.
y = -72·0 +13 . . . .substitute 0 for x
= 0 +13 = 13 . . . . the y-intercept; the value of b.
