Well you can graph it by plotting 3 points then drawing a line through these 3 points. The graph will be a straight line . By plotting 3 points you can be more sure if you are right, because if you make a mistake then they might not make a straight line.

Put y = 0 in the equation and find the x coordinate:-

x + 5(0) = -20

x = -20

So we have one point to plot:- (-20,0)

Putting x = 0 we get 5y = -20 so y = -4

Second point:- (0, -4)

Putting x = 5 say we get 4 + 5y = -20 so y = -25/5 = -5

so our 3rd point is (5, -5)

7 0

4 years ago

Read 2 more answers

Find the x intercept(s) y= -x^2 + 2

VashaNatasha [74]

Answer:

$(\pm \sqrt{2}, 0)$

Step-by-step explanation:

The x intercepts are basically the points at which y = 0.

-x^2 + 2 = 0

-x^2 = -2

x^2 = 2

x = $\pm \sqrt{2}$

4 0

3 years ago

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20. What percent of 392 is 98? 22. 33% of what number is 145? 24, 17 is 40% of what number?

Black_prince [1.1K]

20)

if we take 392 to be the 100%, what is 98 off of it in percentage?

$\bf \begin{array}{ccll}
amount&\%\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
392&100\\
98&p
\end{array}\implies \cfrac{392}{98}=\cfrac{100}{p}\implies p=\cfrac{98\cdot 100}{392}$

22)

let's say is "x", so if "x" is the 100%, and we know that 145 is the 33%, what the dickens is "x"?

$\bf \begin{array}{ccll}
amount&\%\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
x&100\\
145&33
\end{array}\implies \cfrac{x}{145}=\cfrac{100}{33}\implies x=\cfrac{145\cdot 100}{33}$

24)

again, if we take "x" to be the 100%, and we know that 17 is 40%, what is "x"?

$\bf \begin{array}{ccll}
amount&\%\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
x&100\\
17&40
\end{array}\implies \cfrac{x}{17}=\cfrac{100}{40}\implies x=\cfrac{17\cdot 100}{40}$

5 0

3 years ago