Answer:
Step-by-step explanation:
First draw a line. I will put it in an attachment so you can see the line.
Now choose to points on the line to use the slope formula.
(0,15) and (3,13).
Slope formula: 
Plug in the information needed using the two points chosen.
The slope is 
.
Now use point-slope formula.
Point-slope formula: y-y1=m(x-x1)
y-15=(x-0)
y-15=x-0
Subtract 15 from both sides.
y=x-15
Hope this helps!
If not, I am sorry.
Answer:
u-use area
Step-by-step explanation:
Answer:
its the second one
Step-by-step explanation:
Answer:
∠b=133°
∠c=47°
∠d=133°
Step-by-step explanation:
We are given with two lines intersecting at a point and thus forming 4 angles
∠a , ∠b ,∠c and ∠d
Here we must understand the properties of angles formed by two intersecting lines.
Supplementary Angles :
In our image following pairs are supplementary angles
∠a and ∠b
∠b and ∠c
∠c and ∠d
∠d and ∠a
the properties of supplementary angles say that their sum is 180°
Hence if ∠a=47°
∠a+∠b=180°
47°+∠b=180°
∠b=180°-47°
∠b=133°
Vertically opposite angles. When two lines intersects , they form two pairs of vertically opposite angles
here
∠a and ∠c
∠b and ∠d
are vertically opposite angles
The property says that they are equal.
Hence
if ∠a=47° , ∠c=47°
if ∠b=133° , ∠d=133°
