Find the y internet using y=4/5x+b and (20,7)

Answer 1

Hello, I think what you are looking for is the y-intercept, the point where the line crosses the y-axis.

To do this we can use the point they gave us, (20, 7). We can substitute 20 for x and 7 for y into the equation, then solve for b.

y = (4/5)x + b

7 = (4/5)20 + b

7 = 16 + b

7 - 16 = 16 + b - 16

-9 = b

b = -9, so the y-intercept is the point (0, -9)

Answer 2

I assume you mean y intercept. This is b in the equation. You can plug in the (x,y) values into the equation, then solve for b.

7=4/5(20)+b Simplify

7=16+b Subtract 16 from both sides of the equation

7-16=16+b-16 Simplify

-9=b