Determine the pattern rule for the table and write it as an equation.
1 answer:
Answer:
The rule is: y = -10x+85
Step-by-step explanation:
The rule is given by:
Here m is the gradient and b is the y-intercept.
We have to take two pairs of input-output to find the rule
Let the two pairs be:
(x1,y1) = (1,75)
(x2,y2) = (2,65)
Slope is found using the formula:
Putting the values
Putting the value of slope
Putting a pair of input-output in the equation (1,75)
Putting the value of b
Hence,
The rule is: y = -10x+85
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It should be -3x but i could be wrong
Collect like terms.
8x - 2 + x = 14
9x - 2 = 14
9x = 16
<h3>
Answer:</h3>
∠C = 40°
∠D = 75°
<h3>
Step-by-step explanation:</h3>
AB ║ CD, so AD and BC are transversals. The angle pairs (A, D) and (B, C) are "alternate interior angles", hence congruent.
∠C = ∠B = 40°
∠D = ∠A = 75°
Answer:
100 miles
Step-by-step explanation:
Relative Speed: 60+40=100 mph
you can think that one train is stationary,another one is 100 mph
so one hour before the train pass each other,the distance is 100 miles
The percent of change is 200%