>; < - dot line
≥; ≤ - solid line
>; ≥ - shading above the line
<; ≤ - shading below the line
----------------------------------------------
y = 2x + 3 - it's a linear function. We only need two points to plot the graph. Select two any x values and calculate the y values:
for x = 0 → y = 2(0) + 3 = 0 + 3 = 3 → (0, 3)
for x = -2 → y = 2(-2) + 3 = -4 + 3 = -1 → (-2, -1)
y > 2x + 3
Dot line an shading above the line (look at the picture).
Answer:
Step-by-step explanation:
<u>Use midpoint formula</u>
- x = (x₁ + x₂)/2
- y = (y₁ + y₂)/2
#3
Endpoints (0, 0) and (6, 8)
<u>Midpoint has coordinates:</u>
Correct choice is C
#4
Endpoints (-5, 3) and (3, 15)
<u>Midpoint has coordinates:</u>
- x = (-5 + 3)/2 = -1, y = (3 + 15)/2 = 9
- Point is (-1, 9)
Correct choice is B
-2<x<3 | *2
-4<2x<6 | +7
3< 2x+7< 13
3<10<13
The answer is C
Answer:
the above is a function
Step-by-step explanation:
function is a mapping from a set A to B, which associative every element of A with unique image in B.
Here, f(-3)=6, f(-5)=6
f(3)= -2, f(-5)=1
all elements have image.
so this is a function.
