Question

Here is an equation.

y = 3x + 5
a) When x = 10, what is the value of y?
b) When x = -10, what is the value of y?

Answer 1

• a) y = 35
• b) y = -25

Explanation:

Given equation,

→ y = 3x + 5

The value of y when x is 10,

→ y = 3x + 5

→ y = 3(10) + 5

→ y = 30 + 5

→ [ y = 35 ]

The value of y when x is -10,

→ y = 3x + 5

→ y = 3(-10) + 5

→ y = (-30) + 5

→ [ y = -25 ]

So, these are the values of y.