Please help, I'll mark Brainiest. It's 8th grade math
2 answers:
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Answer:
Step-by-step explanation:
The equation of a line is usually written in the form of y=mx+c, where m is the gradient (also known as slope) and c is the y-intercept (the point through which the line cuts through the y-axis).
Using the gradient formula above,
Substitute the value of m into the equation:
y= ½x +c
To find the value of c, substitute a pair of coordinates.
When x=4, y= -6,
-6= ½(4) +c
-6= 2 +c
c= -6 -2 <em>(</em><em>-2</em><em> </em><em>on</em><em> </em><em>both</em><em> </em><em>sides</em><em>)</em>
c= -8 <em>(</em><em>simplify</em><em>)</em>
Thus, the equation of the line is y= ½x -8.
Answer:
Step-by-step explanation:
Given
Number of Toys = 50
Unit Cost Price = $5.5
Unit Selling price = $15
Required
Determine the profit after sales
First, we need to determine the total cost price;
First, we need to determine the total sales;
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Half of the toy was sold at $15;
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Two-fifth of the remaining was sold at half of the sales price
From the above calculation;
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<em>Calculating Two-fifth of the remaining:</em>
<em>Calculating half of the sales price:</em>
This means that 10 toys were sold for $7.5
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The remaining was sold at one-third of the sales price
From the above calculations (1 & 2);
<em>Calculating </em>one-third <em>of the sales price:</em>
This means that 15 toys were sold for $5
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Now the total sales can be calculated;