Question

Puzzle #3

1
-5-4-3-2-1
(W)
3
3
4
12345
-4
3
2
1
-5-4-3-2-1
1
-2
-3
4
-5
A
2345
A
1
2
-5-4-3-2-1
-2
-31
-4
-S
12345
34
12345
answer choices
B:
A:
C:
y>-2x+5 ys-3x+5 y D:
E:
y2x+4 y2-x+4
F:
y G:
H:
I:
y<-3x+5 y>2x+5 ysx+4
Type the 4-letter
code into the
answer box. All
CAPS, no spaces.

Answer 1

The question appears to be from a linear equations section of a math practice test, asking which of the given equations are linear. Equations A and B are both linear because they can be written in the standard linear form y = mx + b. Hence, the correct answer to the practice test question is D. A and B.

A linear equation is an equation between two variables that gives a straight line when plotted on a graph. It has the form y = mx + b, where m and b are constants. Looking at the provided options:

A. y = -3x is linear because it can be written in the form of y = mx + b with m = -3 and b = 0.

B. y = 0.2 + 0.74x is also linear for the same reason, with m = 0.74 and b = 0.2.

C. y=-9.4 - 2x is linear as well, with a negative slope m = -2 and an intercept b = -9.4.

Therefore, the answer to the practice test question 12.1 about linear equations is D. A and B, as both options represent linear equations.