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A straight line runs through these two coordinates (1,5) and (4,7), find the equation of the line.

Given that the equation is a straight line we know that it will take the form of y = mx + c with m as the gradient and c as the y-intercept. We can find the slope by doing (y 1 - y 2 )/(x 1 -x 2 ) = m , if w...
DR
Answered by Daniel R. • Maths tutor
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Biology A-level: describing the action potential

At rest K+ that is going out of cell clamps the membrane potential negative (e.g. -70 mV)An external factor (e.g. synaptic activity) causes the membrane to depolarise slightly. If the voltage reaches thresho...
AM
Answered by Abubakar M. • Biology tutor
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Explain how a coordinate bond forms

A coordinate bond is a bond formed through the donation of a lone pair of electrons from an atom bonding to another atom which has an empty orbital.The lone pair from one atom is donated to the empty orbital...
TM
Answered by T M. • Chemistry tutor
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What is an autotroph?

An organism that produces its own food
WC
Answered by Will C. • Biology tutor
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What elements make up the halides?

Flourine, chlorine, bromine, iodine, astatine
WC
Answered by Will C. • Chemistry tutor
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