Question 7

Which equation represents a linear function?

x = 3

y = - 3x + 10

y = 3x2 + 1

y=16/x

y = - 3x + 10

Step-by-step explanation:

The general equation of a linear function is y = mx + b.

If we substitute the values m = - 3 and b = 10, we get y = - 3x + 10

A is wrong. The graph of x = 3, but it is not a function, because there are many values of y that correspond to x = 3.

C is wrong. The equation represents a parabola.

D is wrong. The equation represents a hyperbola.