Answer:
y= 8x +7
Step-by-step explanation:
<u>slope-intercept form:</u>
y= mx +c, where m is the gradient (or slope) and c is the y-intercept.
Since it is a linear function, the gradient of any 2 points would be equal.
![gradient = \frac{y1 - y2}{x1 - x2}](https://tex.z-dn.net/?f=gradient%20%3D%20%20%5Cfrac%7By1%20-%20y2%7D%7Bx1%20-%20x2%7D%20)
Thus, gradient of the line
![= \frac{39 - 23}{4 - 2} \\ = \frac{16}{2} \\ = 8](https://tex.z-dn.net/?f=%20%3D%20%20%5Cfrac%7B39%20-%2023%7D%7B4%20-%202%7D%20%20%5C%5C%20%20%3D%20%20%5Cfrac%7B16%7D%7B2%7D%20%20%5C%5C%20%20%3D%208)
Subst. m=8 into the equation:
y= 8x +c
To find the value of c, substitute a pair of coordinates.
When x=0, y= 7,
7= 8(0) +c
c= 7
Thus, the equation of the linear function is y= 8x +7.
The lcd is 34. So D would be your answer
Answer:
ok i will explain inequalities here is a example problem
x-12=15 add 12 to both sides x-12+12=15+15 is the opposite for adding in adding you have to subtract the both numbers like in adding
Answer:
The slope should be undefined
Step-by-step explanation:
The slope is undefined, but if the line went horizontal then the slope would equal 0.
Answer:
Amount of orange = 1.25 pound
Step-by-step explanation:
Given:
Total amount of apple = 2.5 pound
Total cost = $4.5
Missing cost;
Orange = $1.2 per pound
Apple = $1.2 per pound
Computation:
Assume amount of orange = x
So,
1.2(x) + 2.5(1.2) = 4.5
1.2 x + 3 = 4.5
1.2 x = 1.5
x = 1.25 pound
Amount of orange = 1.25 pound