To find the equation of a line knowing two points it passes through, we must first find the slope and then substitute the x and y values to figure out the y intercept.
First thing is to find the slope using the formula m = Δy ÷ Δx
m = 5 - (-2) ÷ 4 - (-5)
Now we simplify
m = 7 ÷ 9
Our equation so far is y = 7/9x + b. Now we can substitute the values of x and y from a point to figure out the answer. The equation here uses the point (4,5)
5 = 7/9 · 4 + b
Get b on one side
5 - 28/9 = b
Simplify
b = 1 + 8/9
That makes the equation of the line y = 7/9x + (1 + 8/9)
10-4=6 im not s. sure rhia ia correct. What grade are you in?
Answer:
YES
Step-by-step explanation:
Given the equations representing two lines:
2x - y = -3 ----› Equation 1
-6x - 2y = -6 -----› Equation 2
Multiply equation 1 by 2, and multiply equation 2 by 1.
2x - y = -3 ----› Equation 1 × 2
-6x - 2y = -6 -----› Equation 2 × 1
4x - 2y = -6
-6x - 2y = -6
Subtract both equations
10x = 0
Divide both sides by 10
x = 0/10
x = 0
Substitute x = 0 into equation 1
2x - y = -3
2(0) - y = -3
0 - y = -3
-y = -3
Divide both sides by -1
y = 3
Thus, the solution would be (0, 3).
5,-6 This should be it hopefully if not sorry
The answer to number 1 is C. Not sure how to get that, I just got it off line converting it with a website.
The answer to number 2 in B, also got that offline by converting it.
3.) Area of a circle:
Radius-16
16×16×3.14=803.84 rounded to the nearest number is 804.
Since this says ESTIMATED we look for the closest answer to 804.
The answer is C. 805 square meters. hope it helps!!!!!!!!!!!!!!!