Answer:
Multiple answers in Step-by-step explanation
Step-by-step explanation:
x+y = 10
1 + 9 = 10
2 + 8 = 10
3 + 7 = 10
4 + 6 =10
5 + 5 = 10
x - y = 2
4 - 2 = 2
8 - 6 = 2
10 - 8 = 2
12 - 10 = 2
22 - 20 = 2
Answer:
look at the picture i have sent
Answer:
y = -1/2x + 5/2 or y = -0.5x + 2.5
Step-by-step explanation:
perpendicular lines have reciprocated slopes (opposite signs and values)
y = 2x + 1 → y = (-1/2x) + b
plug in (3,1) to find b
1 = -1/2(3) + b
1 = -1.5 + b
2.5 = b
y = -1/2x + 5/2 or y = -0.5x + 2.5
It doesn’t really matter which variable you isolate first but usually you would use the one that’s by itself already. like for example one of the equations was y = 8. you would already have your y solve for so you would just have to plug that in for y in the other equation. personally, i usually do x first unless one of the equations has either x or y by itself already. i think its easier to just do x first and then solve for y after that, but it just depends on what the equations are; sometimes it might be easier to just do y first. hope this helps!
1 1/2 because it is the answer of 4 - 1 1/2