Answer:
B, y+6=-4(x-2)
Step-by-step explanation:
since you need a perpendicular line, the slope has to be the opposite reciprocal. 4/1 or 4 is the reciprocal of 1/4, and to make it the opposite reciprocal, you need to change it to negative. for the coordinates (-2,-6), you need to use it in the equation y-y1=m(x-x1)
Answer:The answer is D
Step-by-step explanation:
Answer:
hi sry i dont get what to write for an expression cause i dont have a number but i can tell you what to do! to find out what 15% of something is divide the number by 100 and the number you get after dividing multipy by 15 and you have you answer then all you have to do is put it in a expression!
Step-by-step explanation:
-2x+4y=1
3x-6y=9
To find x
First, change the second equation to slope equation.
Next, you will get -6y=3x+ 9 and divide everything by -6. -6y/-6 = 3x/-6 + 9/-6
Then, simplify and you will get y= -1/2x-3/2.
After that, replace the y=-1/2x-3/2 from the second equation and replace the y with (-1/2x-3/2).
Then, use the -2x from the first equation, add 4 and put one of the parentheses after 4 and put down -1/2x-3/2, put another parentheses after -1/2x-3/2, and put the equal sign (=) and after the equal sign, put 1.
Lastly, your equation will look like -2x+ 4(-1/2x-3/2) = 1. Do -2x + 4 and then, multiply the 4 with (-1/2x-3/2). The equation with look like -2x+-4/2x-12/2 = 1.
Simplify the fractions (-4/2x and 12/2) and you will get -2x and 6.
The equation will look like -2x+-2x-6=1 and then, add 6 to the left side of = and the right side of =.
Add -2x and -2x together, it will get you to -4x=-7, and divide -4 on each side.
It will look like this -4x/-4=7/-4. Your answer for x is -1 3/4 or -1.75. I'd rather go with the decimal instead of fraction.
To find y
First, use the second equation.
Next, write down 3 and replace the x with -7/4 in parentheses because I'd rather use an improper fraction instead of a decimal. After the parentheses, subtract the -6y and put =9.
Then, the equation will look like 3/1(-7/4) -6y = 9. Distribute by multiplying 3/1 and -7/4 which will get you to -21/4.
After that, multiply 4/1 to the entire equation. It will look like 4/1(-21/4 -6y = 9). The equation will look like -21 -24y= 36. Add the -21 to both sides of the equation. You will get to -24y = 57. Divide -24y by -24 and 57 by -24. It will look like -24y/-24 = 57/-24. You will get the answer of -57/24, but you have to simplify the answer. If you divide by 3 to the numerator and denominator, you will get -19/8. However, I do prefer the decimal answer, which is -2.37.
Lastly, put the ordered pair together, since x= -1.75 and y= -2.37. Your answer will start with parentheses and then x and end with y and another parentheses, but in between x and y there's always a comma. So, your official answer is (-1.75, -2.37).