Whoever can answer this, you’re a lifesaver and my heart goes out to you! will award you with as much as i can.
“select all the equations that have graphs with the same y-intercept.”
a. y=3x-8
b. y=3x-9
c. y=3x+8
d. y=5x-8
e. y=2x-8
f. y=1/3x-8
i

a. y = 3x - 8

d. y = 5x - 8

e. y = 2x - 8 and

f.

Step-by-step explanation:

The equation in the form y = mx + c is known as the slope-intercept form of a straight line equation and the value of c with sign denotes the y-intercept of the straight line on the coordinate plane.

Now, given are few straight line equations in slope-intercept form and we have to choose from then those have the same y-intercept.

a. y = 3x - 8

d. y = 5x - 8

e. y = 2x - 8 and  

f.  

Those all equations have the same y-intercept which is - 8. (Answer)

exactly you go it

step-by-step explanation:

(b) 240

step-by-step explanation:

first, we use the pythagorean formula using the given side lengths to find x. then we use x to find the side lengths. then we add the side lengths to find the perimeter.

pythagorean theorem formula:

a^2 + b^2 = c^2

(x - 20)^2 + (x - 40)^2 = x^2

x^2 - 40x + 400 + x^2 - 80x + 1600 = x^2

x^2 -120x + 2000 = 0

(x - 100)(x - 20) = 0

x - 100 = 0 or x - 20 = 0

x = 100 or x = 20

we see that the solution x = 20 must be discarded because it will give a negative side length and a side length of 0. the only valid solution is x = 100.

perimeter = sum of the lengths of the sides

perimeter = x + x - 20 + x - 40

perimeter = 3x - 60

replace x with 100.

perimeter = 3(100) - 60

perimeter = 300 - 60

perimeter = 240