20 POINTS! HELP!
Choose the expression that represents a linear expression.

A. −17x^4 − 18x^3 + 19x^2 − 20x + 21
B. 18x^3 + 19x^2 − 20x + 21
C. 23x^2 + 24x − 25
D. 4x + 4

D is correct

Step-by-step explanation:

A linear expression contains no higher power exponents than 1

Only D satisfies this as 4x+4 is the same as 4x^1+4

Hope this helped!

hi,

i'm 75% sure the answer is 1,1 to both lines.

have a great day

step-by-step explanation:

y = | -2(-2) |     →     y = | 4 |     →     y = 4       ⇒   (-2, 4)

y = | -2(-1) |     →     y = | 2 |     →       y =   2       ⇒   (-1, 2)    

y = | -2(0) |     →     y = | 0 |     →       y = 0         ⇒   (0, 0)

y = | -2(1) |   c →     y = | -2 |     →     y =   2         ⇒   (1, 2)    

y = | -2(2) |     →     y = | - 4 |     →     y =   4         ⇒   (2, 4)