1.
2x+7=2x-7
2x-2x=-7-7
0=-14
Math error.
2.
3x+8=-2x+8
3x+2x=8-8
5x=0
x=0
3.
4(x+1)=4x+4
4x+4=4x+4
4x-4x=4-4
0=0
Correct
Answer:
Please see the images attached. #2 is the one with three different background colours & three different lines. #3 is the one with one background colour (other than white) and one line.
Step-by-step explanation:
Graph them onto a graphing calculator. Let me know if you need more help!
Answer:
4x^2-13x+4
Step-by-step explanation:
1. Add together all like terms ( so x^2+3x^2=4x^2)
2. once you add all your like terms. order the numbers from biggest to smallest (4x^2'-13x+4)
*You'll know which is biggest by the exponent!
Hope this helps!!!!!
Answer:
The number on the graph that touches the y-axis or the the c term. EX. 3x^2 + 2x -3. -3 is the y intercept
Step-by-step explanation:
Answer:
The coordinates of the midpoint are: (1, -2)
Step-by-step explanation:
We use the formula for midpoint coordinates knowing the end points (x1, y1) (x2, y2):
xm = x1 + (x2-x1)/2
in our case:
xm = -3 + (5 - - 3)/2 = - 3 + (8/2) = -3 + 4 = 1
ym = y1 + (y2-y1)/2
in our case:
ym = 4 + (- 8 - 4)/2 = 4 + (-12/2) = 4 - 6 = -2
The coordinates of the midpoint are: (1, -2)
