Question

1. y = -2 √(25-x ) +8

2. y = -3 √(x+ 9) +4

Please help

Answer 1

X AND Y INTERCEPTS

1st Answer:

x = 9

Explanation:

first you want to substitute the y

0 = -2 √(25 - x + 8)

move the expression to the left

2 √(25 - x) = 8

divide both sides

√25 - x + 4

move the constant to the right

25 - x = 16

calculate

-x = -9

change the signs

x = 9

2nd Answer:

x = -65/9 OR x = - 7 2/9, x = - 7.2

Explanation:

first you want to substitute the y

0 = -3 √(x + 9) = 4

move the expression to the left

3√(x+9) = 4

divide both sides

√(x+9) = 4/3

move the constant to the right

x = 16/9 - 9

calculate

x = -65/9