Answer:
18-22 is -4
Step-by-step explanation:
Answer:
2x + 2y = 4 does not belong
Step-by-step explanation:
2x + y = 4 → <u>y = -2x + 4</u>
y = -2x + 4 → <u>y = -2x + 4</u>
f(x) = -2x + 4 → <u>y = -2x + 4</u>
2x + 2y = 4 → <u>y = -x + 2</u>
Answer:
Line A.
Step-by-step explanation:
When you put x as zero into 3x-2, you get 3(0)-2. That equals -2. Therefore, y = -2. When x=0, that is the y-intercept, so the y-intercept is -2. Line A crosses the y-axis at -2, so line A has that y-intercept.
Slope is always y/x. On a graph, that is the number of squares UP over the number of squares ACROSS. Counting, we get, 3 squares up over 1 square across for line A. 3/1= 3. The slope is the number we multiply by x. In the equation, that is 3, because we see 3x, and no sign or space between 2 numbers automatically means we multiply. So line A also has the correct slope.
In linear equations (straight lines), the same slope and y-intercept are enough to tell you that the equation matches the line.
Therefore, the answer is A!
Answer:
B $34
Step-by-step explanation:
15% of $40= $6
40-6= $34
or
100%-15%= 85% or 0.85
$40*0.85= $34