Answer:
Straight-line equations, or "linear" equations, graph as straight lines, and have simple variable expressions with no exponents on them. If you see an equation with only x and y – as opposed to, say x2 or sqrt(y) – then you're dealing with a straight-line equation.
There are different types of "standard" formats for straight lines; the particular "standard" format your book refers to may differ from that used in some other books. (There is, ironically, no standard definition of "standard form".)
Let's solve your equation step-by-step.
6+2s−8s=18
Step 1: Simplify both sides of the equation.
6+2s−8s=18
6+2s+−8s=18
(2s+−8s)+(6)=18(Combine Like Terms)
−6s+6=18
−6s+6=18
Step 2: Subtract 6 from both sides.
−6s+6−6=18−6
−6s=12
Step 3: Divide both sides by -6.
−6s/−6
=12/−6
s=−2
Answer:
s=−2
<u>The solution is (1,2)</u>
Step-by-step explanation:
7x + 10y = 27
x - 10y = -19 +--------------------
8x = 8
Divide by 8 on both sides
x = 1
To find y substitute any of the equations to 1
7(1) + 10y = 27
7 + 10y = 27
Substract 7 from both sides
10y = 20
Divide by 10
y = 2
Answer:
35 sq units
Step-by-step explanation:
Each student gets 4 because 4 times 16 is 64 n after putting up half she gave out 64 so 4 is your answer
