Answer:
where's the graph?
Step-by-step explanation:
Step-by-step explanation:
(3+1/4)-(4+2/5)
(13/4)-(22/5)
find common denominator of 20
(65/20)-(88/20)
-23/20
Hope that helps :)
Answer:
x = 35
Step-by-step explanation:
the 3 angles lie on a straight line and sum to 180° , that is
40 + 2x + 30 + 40 = 180
110 + 2x = 180 ( subtract 110 from both sides )
2x = 70 ( divide both sides by 2 )
x = 35
Answer:
3,14
Step-by-step explanation:
3x+5=6x-4
x=3
y=3x3+5
y=14
x,y=3,14
14=3x3+5
14=6x3-4
14=14
14=14
(x,y)=3,14
Answer: a) y = - 3/2 x + 7/2
Step-by-step explanation:
The equation of a straight line can be represented in the slope-intercept form, y = mx + c
Where c = y intercept
m represents the slope of the line.
m = (y2 - y1)/(x2 - x1)
y2 = final value of y
y 1 = initial value of y
x2 = final value of x
x1 = initial value of x
The line passes through (3, - 1) and (- 1, 5),
y2 = 5
y1 = -1
x2 = - 1
x1 = 3
Slope,m = (5 - - 1)/(- 1 - 3) = 6/- 4 =
- 3/2
To determine the y intercept, we would substitute x = 3, y = - 1 and m= - 3/2 into y = mx + c. It becomes
- 1 = - 3/2 × 3 + c
- 1 = - 9/2 + c
c = - 1 + 9/2
c = 7/2
The equation becomes
y = - 3x/2 + 7/2
