You can solve it by several ways, but easiest and shortest would be "By Elimination"
So, subtract 2nd equation from 1st,
-2x = 20
x = -10
Substitute it in 2nd equation,
-3(-10) + 9y = -6
30 + 9y = -6
9y = -6 - 30
y = -36/9
y = -4
In short, Your Answer would be: (-10, -4)
Hope this helps!
As you can see in the picture, all the points lie on the same line, so they are collinear. The line follows an equation with the general form of:
y = mx + b
where m and b are the constants
The b parameter is the y-intercept. This is the point at which the line intersects the y-axis. From the graph, b = 0. The other constant is the slope m. You can choose any two points, the answer would just be the same.
m = (y₂ - y₁)/(x₂ - x₁)
Suppose point 1 is (2,1) and point 2 is (3,1.5).
m = (1.5 - 1)/(3 - 2) = 1/2 or 0.5
Therefore, the answer is either 0 or 0.5. From the choices, the answer would be letter C.
Answer:
72 square feet.
Step-by-step explanation:
You could do this by figuring out directly how many tiles are needed to make the border B...
It is easier to find the area of the large area and subtract the white pool
Large rectangle = 18 * 9 = 162
Small rectangle = <u>15 * 6 = 90</u> Subtract
Area of border = 72
3/8 times 3/1 is 9/8 or 1 1/8 inches.
(85 + 84 + 78 + x) / 4 = 86
(247 + x) / 4 = 86
247 + x = 86 * 4
247 + x = 344
x = 344 - 247
x = 97 <=== her score was 97
